S 1503 - Agrigentum, silver, didrachms (410-406 BCE)
From SILVER
410 BCE - 406 BCE Silver 375 kg
Description
| ObverseInscription or printing placed on the obverse.: | [AKPAΓA-N-TI-NON] (Greek).Eagle standing left with wings spread, attacking a coiled serpent, above, ΣΤΡΑ. |
| ReverseInscription or printing placed on the reverse.: | Crab, above, vine leaf, below, wreckfish to left |
Mint and issuing power
| MintIdentifies the place of manufacture or issue of a numismatic object.: | Agrigentum | Ancient regionAncient region.: | Sicily | Modern countryModern country: Italy | AuthorityIdentifies the issuing power. The authority can be "pretended" when the name or the portrait of X is on the coin but he/she was not the issuing power. It can also be "uncertain" when there is no mention of X on the coin but he/she was the issuing power according to the historical sources: |
Chronology
| FromIdentifies the initial date in a range assigned in a numismatic context. | 410 BCE | toIdentifies the final date in a range assigned in a numismatic context.. | 406 BCE | PeriodTime period of the numismatic object.: Classical 480-323 BC 
|
Physical description
| MetalThe physical material (usually metal) from which an object is made.: | Silver
|
Median weightMedian of the weights of numismatic objects (in grams). in grams | 8.60 | DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: | didrachm
|
StandardStandard.: | Attic |
Image
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S 1503 - Agrigentum, silver, didrachms (410-406 BCE).jpg [1]
References
| Die study referencePublication of the study: | Westermark 20181Westermark 2018, p. 201-202, n° 601-603 | ||
| Coin series referenceReference to coin series study: | |||
Obverse dies distribution
| FrequencyFrequency of specimen in distribution. ᵖ | Number of obversesNumber of obverse dies. ᵖ (o) | % (o) | Number of coinsNumber of coins. (n) | % (n) | Die nameName(s) of the die(s). |
| 1 | 1 | 50 | 1 | 9.09 | 2 |
| 10 | 1 | 50 | 10 | 90.91 | 1 |
| Total | 2 of 2 | 100 | 11 of 11 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obversesNumber of obverse dies. ᵖ (o) | 2 | Number of singletons (o1)The number of singleton coins. ᵖ | 1 |
| Number of reverse diesNumber of reverse dies. (r) | 1 | Number of coinsNumber of coins. (n) | 11 |
| Coins per obverse dieNumber of coins per obverse die. (n/o) | 5.5 | Coins per reverse dieNumber of coins per reverse die. (n/r) | 11 |
| Reverse per obverse ratioRatio of obverse dies divided by reverse dies. (r/o) | 0.5 | Percentage of singletons (o1)number of coins (n) divided by the number of singletons (o1) ᵖ | 50 % |
| Original number of dies (O) (Carter 1983 formula)The estimation of the number of coins according to Carter 1983 ᵖ | 2.18 | Coins struck if 20,000 as average productivity per dieCoins made if the average productivity for obverses (according to Carter) is 20,000. ᵖ | 43,600 |
| Original number of dies (O) (Esty 2011 formula)The estimation of the number of coins according to the singleton formula in Esty 2011 ᵖ (O) | 2.44 | Survival rate if 20,000 as average productivity per dieSurvival rate if average productivity is 20,000. ᵖ | 0.00025 |
| Coverage (o = % of O) (Esty 1984 formula)Esty 1984 - coverage (% of O) ᵖ (o = % of O) | 90.91% | Die productivity if survival rate 1/2,000Average productivity if survival rate is 1/2,000. ᵖ | 10,091.74 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula)Carter 1983 * Median weight * 20000 (*10 if gold or electrum) ᵖ | 375 kg <br /> 375 kg | Die productivity if survival rate 1/5,000Average productivity if survival rate is 1/5,000. ᵖ | 25,229.36 |
Remarks
References
- ^ Westermark, Ulla (2018), The coinage of Akragas c. 510-406 BC, 2 vol., Uppsala.
